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Original Paper
Towards a Microscopic Theory of Particle Charging
Article first published online: 28 MAY 2009
DOI: 10.1002/ctpp.200910028
Copyright © 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
1521-3986/asset/cover.gif?v=1&s=4b03e1cc66b0b8a69dc1696d82dc79777f177658 "Contributions to Plasma Physics")
Additional Information
How to Cite
Bronold, F. X., Fehske, H., Kersten, H. and Deutsch, H. (2009), Towards a Microscopic Theory of Particle Charging. Contrib. Plasma Phys., 49: 303–315. doi: 10.1002/ctpp.200910028
Publication History
- Issue published online: 28 MAY 2009
- Article first published online: 28 MAY 2009
- Manuscript Accepted: 6 APR 2009
- Manuscript Received: 23 MAR 2009
Funded by
- Fundamentals of Complex Plasmas. Grant Number: SFB-TR 24
- Abstract
- References
- Cited By
Keywords:
- Dusty or complex plasma;
- plasma-boundary interaction;
- surface states
Abstract
We recently questioned the treatment of a dust particle as a perfect absorber for electrons and ions and proposed a surface model for the charge of a dust particle in a quiescent plasma which combines the microscopic physics at the grain boundary (sticking into and desorption from external surface states) with the macrophysics of the discharge (plasma collection fluxes). Within this model the charge and partial screening of the particle can be calculated without relying on the condition that the total electron collection flux balances on the grain surface the total ion collection flux. Grain charges obtained from our approach compared favorably with experimental data. The purpose of this paper is to describe our model in more detail, in particular, the hypotheses on which it is built, contrast it with the standard charging models based on flux balancing on the grain surface, and to analyze additional experimental data (© 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)